| 1 |
d333eb6b
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 2 |
|
|
// Copyright 2016 Leszek Koltunski //
|
| 3 |
|
|
// //
|
| 4 |
|
|
// This file is part of Distorted. //
|
| 5 |
|
|
// //
|
| 6 |
|
|
// Distorted is free software: you can redistribute it and/or modify //
|
| 7 |
|
|
// it under the terms of the GNU General Public License as published by //
|
| 8 |
|
|
// the Free Software Foundation, either version 2 of the License, or //
|
| 9 |
|
|
// (at your option) any later version. //
|
| 10 |
|
|
// //
|
| 11 |
|
|
// Distorted is distributed in the hope that it will be useful, //
|
| 12 |
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
| 13 |
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
| 14 |
|
|
// GNU General Public License for more details. //
|
| 15 |
|
|
// //
|
| 16 |
|
|
// You should have received a copy of the GNU General Public License //
|
| 17 |
|
|
// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
|
| 18 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 19 |
|
|
|
| 20 |
fe82a979
|
Leszek Koltunski
|
package org.distorted.library.main;
|
| 21 |
6a06a912
|
Leszek Koltunski
|
|
| 22 |
|
|
import java.nio.ByteBuffer;
|
| 23 |
|
|
import java.nio.ByteOrder;
|
| 24 |
|
|
|
| 25 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 26 |
e0b6c593
|
Leszek Koltunski
|
/**
|
| 27 |
05403bba
|
Leszek Koltunski
|
* Create a flat, rectangular grid.
|
| 28 |
e0b6c593
|
Leszek Koltunski
|
* <p>
|
| 29 |
|
|
* Perfect if you just want to display a flat Texture. If you are not planning to apply any VERTEX
|
| 30 |
26df012c
|
Leszek Koltunski
|
* effects to it, use MeshFlat(1,1), i.e. a Quad. Otherwise, create more vertices for more realistic effects!
|
| 31 |
e0b6c593
|
Leszek Koltunski
|
*/
|
| 32 |
26df012c
|
Leszek Koltunski
|
public class MeshFlat extends MeshObject
|
| 33 |
6a06a912
|
Leszek Koltunski
|
{
|
| 34 |
adb2661c
|
Leszek Koltunski
|
private int mCols, mRows;
|
| 35 |
|
|
private int remainingVert;
|
| 36 |
6a06a912
|
Leszek Koltunski
|
|
| 37 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 38 |
cacc63de
|
Leszek Koltunski
|
// Create a flat, full grid.
|
| 39 |
6a06a912
|
Leszek Koltunski
|
|
| 40 |
a51fe521
|
Leszek Koltunski
|
private void computeNumberOfVertices(int cols, int rows)
|
| 41 |
adb2661c
|
Leszek Koltunski
|
{
|
| 42 |
79f172ab
|
Leszek Koltunski
|
mRows=rows;
|
| 43 |
|
|
mCols=cols;
|
| 44 |
d44ac567
|
Leszek Koltunski
|
|
| 45 |
79f172ab
|
Leszek Koltunski
|
if( cols==1 && rows==1 )
|
| 46 |
|
|
{
|
| 47 |
a51fe521
|
Leszek Koltunski
|
numVertices = 4;
|
| 48 |
79f172ab
|
Leszek Koltunski
|
}
|
| 49 |
|
|
else
|
| 50 |
adb2661c
|
Leszek Koltunski
|
{
|
| 51 |
a51fe521
|
Leszek Koltunski
|
numVertices = 2*( mRows*mCols +2*mRows - 1) +2*(mCols>=2 ? mRows:0) +
|
| 52 |
|
|
(mCols>=2 && mRows>=2 ? 2*mRows-2 : 1);
|
| 53 |
79f172ab
|
Leszek Koltunski
|
}
|
| 54 |
d44ac567
|
Leszek Koltunski
|
|
| 55 |
466450b5
|
Leszek Koltunski
|
//android.util.Log.e("MeshFlat","vertices="+numVertices+" rows="+mRows+" cols="+mCols);
|
| 56 |
d44ac567
|
Leszek Koltunski
|
|
| 57 |
a51fe521
|
Leszek Koltunski
|
remainingVert = numVertices;
|
| 58 |
adb2661c
|
Leszek Koltunski
|
}
|
| 59 |
d44ac567
|
Leszek Koltunski
|
|
| 60 |
5bf698ee
|
Leszek Koltunski
|
|
| 61 |
adb2661c
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 62 |
6a06a912
|
Leszek Koltunski
|
|
| 63 |
a51fe521
|
Leszek Koltunski
|
private int addVertex(int vertex, float x, float y, float[] attribs)
|
| 64 |
adb2661c
|
Leszek Koltunski
|
{
|
| 65 |
|
|
remainingVert--;
|
| 66 |
6a06a912
|
Leszek Koltunski
|
|
| 67 |
a51fe521
|
Leszek Koltunski
|
attribs[8*vertex ] = x-0.5f;
|
| 68 |
|
|
attribs[8*vertex+1] = 0.5f-y;
|
| 69 |
|
|
attribs[8*vertex+2] = 0;
|
| 70 |
6a06a912
|
Leszek Koltunski
|
|
| 71 |
a51fe521
|
Leszek Koltunski
|
attribs[8*vertex+3] = 0.0f;
|
| 72 |
|
|
attribs[8*vertex+4] = 0.0f;
|
| 73 |
|
|
attribs[8*vertex+5] = 1.0f;
|
| 74 |
6a06a912
|
Leszek Koltunski
|
|
| 75 |
a51fe521
|
Leszek Koltunski
|
attribs[8*vertex+6] = x;
|
| 76 |
|
|
attribs[8*vertex+7] = 1.0f-y;
|
| 77 |
6a06a912
|
Leszek Koltunski
|
|
| 78 |
adb2661c
|
Leszek Koltunski
|
return vertex+1;
|
| 79 |
|
|
}
|
| 80 |
466450b5
|
Leszek Koltunski
|
|
| 81 |
adb2661c
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 82 |
d44ac567
|
Leszek Koltunski
|
|
| 83 |
a51fe521
|
Leszek Koltunski
|
private int repeatLast(int vertex, float[] attribs)
|
| 84 |
adb2661c
|
Leszek Koltunski
|
{
|
| 85 |
|
|
remainingVert--;
|
| 86 |
6a06a912
|
Leszek Koltunski
|
|
| 87 |
466450b5
|
Leszek Koltunski
|
//android.util.Log.e("MeshFlat", "repeating last vertex!");
|
| 88 |
6a06a912
|
Leszek Koltunski
|
|
| 89 |
adb2661c
|
Leszek Koltunski
|
if( vertex>0 )
|
| 90 |
|
|
{
|
| 91 |
a51fe521
|
Leszek Koltunski
|
attribs[8*vertex ] = attribs[8*vertex-8];
|
| 92 |
|
|
attribs[8*vertex+1] = attribs[8*vertex-7];
|
| 93 |
|
|
attribs[8*vertex+2] = attribs[8*vertex-6];
|
| 94 |
|
|
attribs[8*vertex+3] = attribs[8*vertex-5];
|
| 95 |
|
|
attribs[8*vertex+4] = attribs[8*vertex-4];
|
| 96 |
|
|
attribs[8*vertex+5] = attribs[8*vertex-3];
|
| 97 |
|
|
attribs[8*vertex+6] = attribs[8*vertex-2];
|
| 98 |
|
|
attribs[8*vertex+7] = attribs[8*vertex-1];
|
| 99 |
d44ac567
|
Leszek Koltunski
|
|
| 100 |
adb2661c
|
Leszek Koltunski
|
vertex++;
|
| 101 |
|
|
}
|
| 102 |
6a06a912
|
Leszek Koltunski
|
|
| 103 |
adb2661c
|
Leszek Koltunski
|
return vertex;
|
| 104 |
|
|
}
|
| 105 |
d44ac567
|
Leszek Koltunski
|
|
| 106 |
adb2661c
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 107 |
|
|
|
| 108 |
a51fe521
|
Leszek Koltunski
|
private void buildGrid(float[] attribs)
|
| 109 |
adb2661c
|
Leszek Koltunski
|
{
|
| 110 |
|
|
boolean lastBlockIsNE = false;
|
| 111 |
|
|
boolean currentBlockIsNE;
|
| 112 |
|
|
int vertex = 0;
|
| 113 |
|
|
|
| 114 |
69ed1eb4
|
Leszek Koltunski
|
float x,y;
|
| 115 |
|
|
final float X = 1.0f/mCols;
|
| 116 |
|
|
final float Y = 1.0f/mRows;
|
| 117 |
|
|
|
| 118 |
466450b5
|
Leszek Koltunski
|
//android.util.Log.d("MeshFlat", "buildGrid");
|
| 119 |
adb2661c
|
Leszek Koltunski
|
|
| 120 |
69ed1eb4
|
Leszek Koltunski
|
y = 0.0f;
|
| 121 |
|
|
|
| 122 |
adb2661c
|
Leszek Koltunski
|
for(int row=0; row<mRows; row++)
|
| 123 |
|
|
{
|
| 124 |
69ed1eb4
|
Leszek Koltunski
|
x = 0.0f;
|
| 125 |
|
|
|
| 126 |
adb2661c
|
Leszek Koltunski
|
for(int col=0; col<mCols; col++)
|
| 127 |
|
|
{
|
| 128 |
|
|
currentBlockIsNE = (2*row<=mRows-1)^(2*col<=mCols-1);
|
| 129 |
|
|
|
| 130 |
|
|
if( col==0 || (lastBlockIsNE^currentBlockIsNE) )
|
| 131 |
|
|
{
|
| 132 |
a51fe521
|
Leszek Koltunski
|
if( row!=0 && col==0 ) vertex = repeatLast(vertex,attribs);
|
| 133 |
|
|
vertex= addVertex( vertex, x, y+(currentBlockIsNE?0:Y), attribs);
|
| 134 |
|
|
if( row!=0 && col==0 ) vertex = repeatLast(vertex,attribs);
|
| 135 |
|
|
if( lastBlockIsNE^currentBlockIsNE) vertex = repeatLast(vertex,attribs);
|
| 136 |
|
|
vertex= addVertex( vertex, x, y+(currentBlockIsNE?Y:0), attribs);
|
| 137 |
adb2661c
|
Leszek Koltunski
|
}
|
| 138 |
a51fe521
|
Leszek Koltunski
|
vertex= addVertex( vertex, x+X, y+(currentBlockIsNE?0:Y), attribs);
|
| 139 |
|
|
vertex= addVertex( vertex, x+X, y+(currentBlockIsNE?Y:0), attribs);
|
| 140 |
adb2661c
|
Leszek Koltunski
|
|
| 141 |
|
|
lastBlockIsNE = currentBlockIsNE;
|
| 142 |
69ed1eb4
|
Leszek Koltunski
|
x+=X;
|
| 143 |
adb2661c
|
Leszek Koltunski
|
}
|
| 144 |
69ed1eb4
|
Leszek Koltunski
|
|
| 145 |
|
|
y+=Y;
|
| 146 |
adb2661c
|
Leszek Koltunski
|
}
|
| 147 |
|
|
|
| 148 |
466450b5
|
Leszek Koltunski
|
//android.util.Log.d("MeshFlat", "buildGrid done");
|
| 149 |
adb2661c
|
Leszek Koltunski
|
}
|
| 150 |
|
|
|
| 151 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 152 |
79f172ab
|
Leszek Koltunski
|
/*
|
| 153 |
a51fe521
|
Leszek Koltunski
|
private static String debug(float[] val, int stop)
|
| 154 |
79f172ab
|
Leszek Koltunski
|
{
|
| 155 |
|
|
String ret="";
|
| 156 |
|
|
|
| 157 |
|
|
for(int i=0; i<val.length; i++)
|
| 158 |
|
|
{
|
| 159 |
|
|
if( i%stop==0 ) ret+="\n";
|
| 160 |
|
|
ret+=(" "+val[i]);
|
| 161 |
|
|
}
|
| 162 |
|
|
|
| 163 |
|
|
return ret;
|
| 164 |
|
|
}
|
| 165 |
|
|
*/
|
| 166 |
11fb6ce0
|
Leszek Koltunski
|
|
| 167 |
79f172ab
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 168 |
a56bc359
|
Leszek Koltunski
|
// PUBLIC API
|
| 169 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
| 170 |
adb2661c
|
Leszek Koltunski
|
/**
|
| 171 |
|
|
* Creates the underlying grid of vertices, normals and texture coords.
|
| 172 |
|
|
*
|
| 173 |
|
|
* @param cols Number of columns in the grid.
|
| 174 |
|
|
* @param rows Number of rows in the grid.
|
| 175 |
|
|
*/
|
| 176 |
a51fe521
|
Leszek Koltunski
|
public MeshFlat(int cols, int rows)
|
| 177 |
|
|
{
|
| 178 |
|
|
super(0.0f);
|
| 179 |
|
|
computeNumberOfVertices(cols,rows);
|
| 180 |
adb2661c
|
Leszek Koltunski
|
|
| 181 |
cab7c165
|
Leszek Koltunski
|
float[] attribs= new float[(POS_DATA_SIZE+NOR_DATA_SIZE+TEX_DATA_SIZE)*numVertices];
|
| 182 |
adb2661c
|
Leszek Koltunski
|
|
| 183 |
a51fe521
|
Leszek Koltunski
|
buildGrid(attribs);
|
| 184 |
adb2661c
|
Leszek Koltunski
|
|
| 185 |
a51fe521
|
Leszek Koltunski
|
//android.util.Log.e("MeshFlat", "dataLen="+numVertices);
|
| 186 |
|
|
//android.util.Log.d("MeshFlat", "attribs: "+debug(attribs,8) );
|
| 187 |
adb2661c
|
Leszek Koltunski
|
|
| 188 |
a51fe521
|
Leszek Koltunski
|
if( remainingVert!=0 )
|
| 189 |
466450b5
|
Leszek Koltunski
|
android.util.Log.d("MeshFlat", "remainingVert " +remainingVert );
|
| 190 |
adb2661c
|
Leszek Koltunski
|
|
| 191 |
a51fe521
|
Leszek Koltunski
|
mVertAttribs = ByteBuffer.allocateDirect(numVertices*VERTSIZE).order(ByteOrder.nativeOrder()).asFloatBuffer();
|
| 192 |
|
|
mVertAttribs.put(attribs).position(0);
|
| 193 |
466450b5
|
Leszek Koltunski
|
|
| 194 |
|
|
setData(numVertices, mVertAttribs);
|
| 195 |
a51fe521
|
Leszek Koltunski
|
}
|
| 196 |
|
|
}
|